/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "Callback.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class CallbackType>
Foam::Callback<CallbackType>::Callback(CallbackRegistry<CallbackType>& cbr)
:
	cbr_(cbr)
{
	checkIn();
}


template<class CallbackType>
Foam::Callback<CallbackType>::Callback(const Callback<CallbackType>& cb)
:
	cbr_(cb.cbr_)
{
	checkIn();
}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

template<class CallbackType>
Foam::Callback<CallbackType>::~Callback()
{
	checkOut();
}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class CallbackType>
bool Foam::Callback<CallbackType>::checkIn()
{
	if (!Callback<CallbackType>::link::registered())
	{
		cbr_.append(static_cast<CallbackType*>(this));
		return true;
	}
	else
	{
		return false;
	}
}


template<class CallbackType>
bool Foam::Callback<CallbackType>::checkOut()
{
	if (Callback<CallbackType>::link::registered())
	{
		CallbackType* cbPtr = cbr_.remove(static_cast<CallbackType*>(this));

		if (cbPtr)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	else
	{
		return false;
	}
}


// ************************************************************************* //
